Stan Salek wrote:
> Hello John,
>> Thanks for your replies to my TADD enclosure questions.
>> Please correct me if my observation is not right: I took a look at the
> Digikey catalog Page 309 and also downloaded the spec sheet directly
> from the Switchcraft web site for the Model 712A power jack. Taking a
> close look at the threaded part (not the body dimensions), that jack has
> a 5/16-inch (0.3125 inch or 7.94 mm) by 32 TPI thread, but the data
> sheet shows an option of using a 3/8-inch (0.375-inch or 9.53 mm) hole
> if fiber insulating shoulder washers are also used. I don't think you
> had that in mind. The "smaller" Radio Shack jacks, like Part No.
> 274-1582, are specified to fit a 21/64-inch (0.328-inch or 8.33 mm)
> hole, so they are essentially equivalent to the Switchcraft types that
> you specified. They fit loosely in the provided hole but could be made
> to work using washers.
>> FYI, the "larger" Radio Shack 274-1563 coaxial power connector is
> specified to fit a 7/16-inch (0.4375-inch or 11.1 mm) hole, probably too
> big for this enclosure.
>> Sorry to take up your time with a nit-picky issue, but its something
> that you may wish to take another look at for the next run of boxes.
No apologies necessary, Stan. That's really helpful input. To be
honest, I haven't used coaxial connectors with my own TADDs (to avoid
unexpected disconnections, I use a short pigtail to go from the Molex
connector to PowerPoles), so I was trying to come up with a generic
solution, and the 3/8 inch hole seemed like a reasonable compromise.
I'll definitely include this information in some sort of note to
accompany the enclosure, and we'll see if we can figure out a better
solution for the next run.
73,
John